Guangzhou to Koh Samui CAN → USM
Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM)
The cheapest return found recently is $505 with Spring Airlines, 23 Dec – 19 Jan 2027, found today.
Return
The cheapest return fare on each of 11 departure dates is usually $459 to $569.
Cheapest return found recently
$505
23 Dec – 19 Jan 2027 · Spring Airlines
Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM)
Leaves 5:55 a.m. · Return leaves 7:55 a.m. · 30 h 15 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$505 23 Dec – 19 Jan 2027found todaySee prices for these dates
$395 31 May 2027 – 19 Jun 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $335 to $438.
At $505, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 11 departure dates from 18 Dec to 16 Jul 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 27-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
12 fares on 11 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 18 Dec – 10 Jan 2027 | $588 | Cathay Pacific | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 2 stops, back 1 stop | found yesterday | See prices for these dates |
| 23 Dec – 19 Jan 2027 | $505 | Spring Airlines | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 24 Dec – 19 Jan 2027 | $534 | Thai Lion Air | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 25 Dec – 1 Jan 2027 | $589 | Thai Lion Air | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 28 Dec – 13 Jan 2027 | $580 | Thai AirAsia | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 31 Dec – 20 Jan 2027 | $558 | Thai AirAsia | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 15 Mar 2027 – 5 Apr 2027 | $498 | Thai AirAsia | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 31 May 2027 – 19 Jun 2027 | $395 | Thai AirAsia | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 2 Jun 2027 – 14 Jun 2027 | $431 | China Southern Airlines | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 4 Jun 2027 – 16 Jun 2027 | $436 | China Southern Airlines | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 16 Jul 2027 – 7 Aug 2027 | $481 | China Eastern | Guangzhou Baiyun International Airport (CAN) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
Which month looks cheapest?
May 2027 is the cheapest month — from $395.
Airlines on the cheapest dates: Thai AirAsia, Thai Lion Air, China Southern Airlines, Cathay Pacific, Spring Airlines, China Eastern.
Premium cabin fares from Guangzhou to Koh Samui
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 23 Dec – 19 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Guangzhou to Koh Samui?
Return
The cheapest fares were 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $366 | $366 | Cheapest seen | 8 |
| 30–59 days | $444 | $335 | +21% | 20 |
| 60–89 days | $512 | $454 | +40% | 23 |
| 90–179 days | $421 | $378 | +15% | 25 |
| 180+ days | $379 | $375 | +4% | 21 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Hong Kong → Koh Samui
129 km from Guangzhou
$481
$24 less than flying from Guangzhou
25 Jan 2027 – 31 Jan 2027 · HKG → USM · out 1 stop, back 1 stop
found today
Guangzhou → Surat Thani
94 km from Koh Samui
$284
$221 less than flying to Koh Samui
8 Jan 2027 – 12 Jan 2027 · CAN → URT · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Guangzhou → Surat Thani
94 km from Koh Samui
$119
29 Mar 2027 · CAN → URT · 1 stop
found 6 days ago
Hong Kong → Koh Samui
129 km from Guangzhou
$212
30 Jul 2027 · HKG → USM · 1 stop
found yesterday
Shenzhen → Koh Samui
104 km from Guangzhou
$247
31 Jan 2027 · SZX → USM · 1 stop
found 5 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 23 Dec – 19 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work